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    Author(s): Stephanie A. Boyle-Yarwood; Peter J. Bottomley; David D. Myrold
    Date: 2008
    Source: Environmental Microbiology DOI: 10.1111/j.1462-2920.2008.01600.x
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (1.22 MB)

    Description

    This study determined nitrification activity and nitrifier community composition in soils under stands of red alder (Alnus rubra) and Douglas-fir (Pseudotsuga menziesii) at two sites in Oregon. The H.J. Andrews Experimental Forest, located in the Cascade Mountains of Oregon, has low net N mineralization and gross nitrification rates. Cascade Head Experimental Forest, in the Coast Range, has higher net N mineralization and nitrification rates and soil pH is lower. Communities of putative bacterial [ammoniaoxidizing bacteria (AOB)] and archaeal [ammoniaoxidizing archaea (AOA)] ammonia oxidizers were examined by targeting the gene amoA, which codes for subunit A of ammonia monooxygenase. Nitrification potential was significantly higher in red alder compared with Douglas-fir soil and greater at Cascade Head than H.J. Andrews.

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    Citation

    Boyle-Yarwood, Stephanie A.; Bottomley, Peter J.; Myrold, David D. 2008. Community composition of ammonia-oxidizing bacteria and archaea in soils under stands of red alder and Douglas-fir in Oregon. Environmental Microbiology. 10(11):2956-2965.

    Keywords

    Soil biology, nitrogen cycling, bacteria, Douglas-fir, red alder

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